Automatically-oscillating electric fan



Feb. s; 1927.

J. F. LlSTER ET AL AUTQMALIICALLY OSCILLATING ELECTRIC FAN 4 Shee FiledDc. v, 1925 ts-Sheet 1 'der Feb. 8,

J. F. LISTER ET AL AUTOMATICALLY oscILLATING ELECTRIC FANl Filed Dec. 7,1925 4Sheets-Shel. 2

'Mlgalzzss .Feb 8 19,27 ".l. F. Lis-ren ET AL AUTOMATIC-ALLY OSCILLATINGELECTRIC Fa Filed DeG- 7.- 1925 4 Sheets-Sheet 3 y Fei. s, 1927.

A 1,617,258 y J. F. LISTER ET AL AUTOMATICALLY OSCILLATING ELECTRIC FAN4 Sheets-Shes):l 4

JAMES RASER LISTER AND HoRA'c winns'MAnwooD; ofBi'fNHAMENGnAND,

ZAs'sztefivons'To VERITY'S COMPANY- AUTOMATIGALLYLOSCILLATING -ELECTRIGFAN.

Applicationxeiea December 7, v1925 semi No. 73,7%, and'in GreatBrita-inf December -'13,1ia24.

Thefinvention relates toan automatically oscillating electric fan ofthe-'kind 'inwhichv Vthe fan oscillates in two planes'simultaney'ouslyffroni' the drive of tlie-`fan wheel spindle through aspeed reducing gear which drives'a crankarni orp'late andthroughY an Yoscillating mechanism provided between lthe 'crank a-rin-onfplate and afixed pointfon a ffstationary fanf\supportY orithe surface to which Ythe'fan -is applied,1` providing a fixed' Vabutineiit `-frcnnwhichthe'oscillations are forced. A -coinbined motor casingt andl fan"bodyhasbeen mounted to rock'on'trunnions `of a EVfiamewhichlitself can'rock 4on 'an axis. at right-angles lto the trunnions and the 'f fspeedof thefan' whelshaft hasA been geared downto veryfslowlyl drive acrank'farmoi' f plate.

1Theinvention. provides in this kind lfan simple"oscillatingniechanisnivery'inexpenv A alltiines alfixture. Said combined' casing sive ttoproduce 'andf fit, veryfs'rn'ooth and {efficient in *actionf anddistinctive byV a Ytelescoping` lneinebrl applied 'between'the crank armY -l-or? plate vandI afstati'ona'ry abutment? through which thecombined-r oscillations l are jforced fronith'e'.` drive-fof the fanf`wheelr spindle. One', part of the-telescoping frnernber is aq-1sleeve@andfthe oth'enfpart' 4is a rodl slidablyVand'abtatablyffengaging the lsleeve and `one lway.

'otherabutment'iwhile 'the other: part prefof these parts; preferably'the"sl.eeve,is fiXed to the stationary mounting ofthe'fanor ff'erably`the"rod suitably connects Iwith rthe l' crank arm ori' plate.

v revolvef and lslide in the stationary part,` rthe featurefoffthepart;l held stationarydoeing *i -thatit L *isA fimmovable transversely or P'side- Three-1 forms of f lthe- ;'invention 1 are reprefsentedby theaccompanying drawings each `Y1de's cr1b1 =,d- -'have been previously'proposediin v 'fein-bodying the `saine essential ffe'ature narnelytheffuse" of? `the 'telescoping member aforesaid between the crank arm t"ori plate and the fixed abutment.

f present invention.

Eigx 2 isf an-'elevationoff Fig. l at vrrightfang-ies.

Fig. "isa 'sidese'ctional elevation of a table orpedestal fan.

Idotted lines A. B,

The -itelescoping -meinfberftherefore 'comprises two parts aforesaid'oneftoi befheld :stationary 1 andI the oth'erfto- Fig.4 is a'rearendview of a V'portion-of Fig. 5 is afdetail section lofl Figli 3 'oii'theY Fig. v6 is a side 1sectional elevation-v of-xa further forni of=tableor pedestalifan.

Fig: 7 Fig. 6. l v

'y' ne alltheig-ures of the,V difawings siniilar .letters of referenceare used to indicate coi'- responding parts.

l/Vitlrf particular reference to Figs." liand 2 thecornbined motor.,casing and Ifa'n-body is arear'endview of a. part'of y, 1,617,258 ff1-ENT eoeiflxce.

a 'through which-the] fan -wheel spindle Y c n Passes and Within whichity revolves is mounted by Opposite trnnnions a2; da; i-,` foci;

P011 OPPOS-teetrunnons d2, d?, ckjupn a bifurcated-.frame rigidlyyhangingfiom ceiling connection f 'this frame` being at greaterjpartof--the-Qspeed reducingflgear is itted. "llheQwhold'of, the partsaforesaid are substantially balanced in the ordinary This'gear'Vconiprisesa slnall worin-g of the fan V'Wheel spindle Q and continuously4the ywormfa1 id--!`Inounted onf a sinall 'shaft being by a safetyfriction clutch' l 'which -opera-tes only' tdi-let'f-thev 'crankshaftrevolve Y f ffromfthe'gear -whentheoscillations ofV the fair areforcibly? ac'cident'allyJ stopped.

-Aiiniefeatareeheranbeiom; partial-nay yafan ofthe-kind to which theinvention relates. 1 The yinvention-is the Ause between thefci'ank the-telescoping-men1ber is :ver-ci callyV formed iii-the cro-wn eZof the'stationary Vbfurcated frame e and :forms the abutment surface 'forforcingl the oscillations While vthe rodY ma slides and revolvesWithinkthesleeve a Working lit and at its lower end x4 is jointedlyconnected tothe outervend 7020i the crank arm c which outer end may turnslightly about the axis of the crank arm. The inanner of joiningthe'lovver end 004' of the rod 003 to the crank arm end 702 is clearlyrepresented by the drawings.

lt Will be clear 'from the foregoing that lthe telescopingv member uforms a simple yand most ethcient oscillating Amechanism fonfoppositetrunnions c2,

coupling the crank arm with a stationary abutmentand thatwhen the fanWheel spindle is driving the crank arm the telescoping member forces theWhole fan to oscillate on Within Whose branches the Vcombined motorcasing andfan Abody a is mounted to rock The casing can rock on theVframe' Z in a vertical plane and the frame d can rock on the peg e2 inva horizontal plane. The frame d seats itself i on a thrustfb'allbearingect the base e.

rTher rod m3 of the telescoping member Vslidably and revolubly engagesVthe sleeve "002 and at its outer end mtjointedly connects with theouter end 7a2 of' the crank arm 7c which outer end A7a2 has a veryyslight axial movement on the crank arm.

The speed reducing gear fromY the `fan Wheel spindle c to the crankarm?" is sub# stantiallyv as before ldescribed that is to say the Wormg, Worm Wheel 71 Worm z' and Worm Wheel j drivin-g the small crank shaftjg.

The safetyV friction clutch Z isprovided between the crank shaft ,7'2and the crank arm ,70.

1When the crank'arm is driven from the ffan Wheel spindle the rod :r3 ofthe telescopingmember x vvill revolve andslide Within the sleeve :r2which being theA surface of an immovable` abutment will force combinedoscillations of vthe fanabout tivo axes at rightangles.

Tithparticular reterence'to Figs'. 6 and 7a crank plate k issubstitutedlor the crank 60 arm inthe previous forms and the rod zu* ofVthe telescopin'g member zu is rigidly applied thereto as a crank pin.lThe other part ot' the telescoping member'v is'the sleeve m2 Ywhich ismounted touniversally rock ina musing m cfa rigidly built arm n Xed toproject immovably from the upper end of the peg e2 of the supporting`base e of the fan. Except that the sleeve may rock in 4the housing it isotherwise immovable that is tovsav it is laterally immovable and formsthe operative surface of the liXed lateral abutment from Which thecombined oscillations are forced consequent upon the revolution of thecrank plate. The Yrod m3 both slides andrevolves in the .sleeve from therevolution of the crank plate 76.

vExcept as just described this form olf oscillating tan is the-saine asthe form Figs. 3 t0 5;

rlhe bifurcated frame Z rocks on the peg e2 ina horizontal plane andthecombined motor casing` and tan body a rocks jupon'the frame d in thevertical plane While the speed reducing gear from the fan Wheel spindlec comprises the Worm r/ on the fan Wheel spindle, the Worm Wheel z andspur pinions 2 and ,7'3 driving the crank plate shaft jzl on which thecrank plate k is mounted.

Having noW described our invention, Awhat We claim and desire to secureby Letters Patent is l. An electrically driven oscillating -fan`combining a stationary support for the fan, a frame. mounted to rockupon said support in one direction only, a combined motor casing and tanbody arranged to rocky upon the iframe at rightLangles to the rockingofthe frame itself, a fan shaftrotatable in the casing and body,v a'cranlrrotated by the'fan Wheel shaft through a. gearing, andV atelescoping member comprising a rod and a sleeve'V slidably andrevolubly engaging each Yother operative between the crank andthestationary support for the tanto force combined oscillations of thek fanfrom the rotation of the fan Wheel spindle, Vsubstantially as described.

2. An electrically driven oscillating 'lian combining a stationarysupport for the lan, a frame lmounted to rock upon said support llO inone direction only, a combined motor casing and tan body arranged torock upon the frame at right-angles to the rocking of the frame itself,a fan shaft rotatabley in the casing and body, ay crank arm rotated fromthefan Wheel shaft through a gearing and a telescoping member Icomprising a rod Vpivoted to the crank and a fixed sleeve carried by thesupport land With which the rod slidably andl revolubly engages inafmanner forcing combined oscillations of the fan from the rotation otthe tan wheel spindle,

VAsubstantially as described'.

3. An electrically driven oscillating fank combining a stationarysupport for the fan, a trame mounted to rock upon said support in onedirection only, a combined motor casing and fan body arranged to rockupon the frame at right-angles to the rockingV of the frame itself, afan shaft rotatable in the casing` and body, a crank arm rotated fromthe fan Wheel shaft through a gearing member comprising a rod pivoted tothe crank and a fixed sleeve carried by the sup' port and which rodslidably and revolubly engages in a manner forcing combined oscillationsof the fan from the rotation of the fan'wheel spindle, substantially asdescribed.

l. An electrically driven oscillating fan combining a stationary supportfor the fan, a frame mounted to rock upon said support in one directionlonly,'a combined motor cas-v ing and fan'body arranged to krock upon theframe'at right-angles to the rockingrofY the frame itself, a fan shaftrotatable in the casing and body, a crank arm rotated from the fan Wheel.shaft through a gearing` and Whose outer end may turn slightly aboutthe axisvof the crank arm and a telescoping membercomprising a rodpivoted to the crank and a fixed sleeve carried by Vthe support i andwhich the rod slidably and revolubly engages inl a manner forcingcombined oscillations ofthe fan from the `rotation of the fan Wheelspindle, substantially as described.

5.1An electrically driven oscillating. fan combining'y a bifurcatedstationary support to hang from' the ceiling, a ring mounted to rockuponopposite trunnions of the bifurcated support a combined motor casing andfan body arranged to rock Within fthe ring at right-angles, a fan shaftrotatable in the casingand body, a crank Varm rotated by the. fan Wheelshaftv through a gearing, `a telescopic connection between the supportand crank -arm and consisting of a rod pivoted tothe outer end of thecrank arm -anda sleeve formed as a fixed partof the bifurcatedstationary support to be enga-ged by the rod `With aslidableVandrevoluble engagement, substantially as described.v

in testimony whereof VWe have hereunto set our hand.

JAMES FRASER LisTEE. HORACE WiLL siviALLWooD.v

